Husserl the philosopher personally experienced World War I breaking out 100 years ago. Like most German and Austrian commoners, at the initial stage of the war, Husserl was extremely passionate for it. After undergoin...Husserl the philosopher personally experienced World War I breaking out 100 years ago. Like most German and Austrian commoners, at the initial stage of the war, Husserl was extremely passionate for it. After undergoing the cruelty of war and losing many relatives and friends, he was once enmeshed in extreme confusion and disappointment, albeit he still made every effort to offer spiritual and ethical support to the soldiers at the front. Along with the proceeding of the war, he soon changed his views with respect to this war and confessed that more and deeper reflections were needed to address issues about problems of nationality, super-national ethics and about problems of wars relevant to them. He made philosophical theoretical reflections with regard to this war after it ended, and presented, eventually, requirements for himself： to be satisfied with taking the possibility of the practical activities of philosophy as the topic of philosophical theoretical study and to give up, in drastic fashion, the intention in such philosophical practices as providing political proposals and exerting political influences, ＂living purely as a scientific philosopher.＂展开更多
An exact analytic solution for wave diffraction by wedge or corner with arbitrary angle (rπ) and reflection coefficients (R0 and Rr) is presented in this paper. It is expressed in two forms-series and integral repres...An exact analytic solution for wave diffraction by wedge or corner with arbitrary angle (rπ) and reflection coefficients (R0 and Rr) is presented in this paper. It is expressed in two forms-series and integral representations, corresponding recurrence relation and asymptotic expressions are also derived. The solution is simplified for some special cases of rπ. For Rr= R0,r= 1/N and Rr≠R0,r = 1/2N, the solution can be reduced to linear superpositions of incident and partially reflected waves, hence a nonlinear solution of forth order for this problem can be obtained by using the author's theory of nonlinear interaction among gravity surface waves. The given solution is related to inhomogeneous Robin boundary conditions, which include the Neumann boundary conditions usually accepted in wave diffraction theory.展开更多
文摘Husserl the philosopher personally experienced World War I breaking out 100 years ago. Like most German and Austrian commoners, at the initial stage of the war, Husserl was extremely passionate for it. After undergoing the cruelty of war and losing many relatives and friends, he was once enmeshed in extreme confusion and disappointment, albeit he still made every effort to offer spiritual and ethical support to the soldiers at the front. Along with the proceeding of the war, he soon changed his views with respect to this war and confessed that more and deeper reflections were needed to address issues about problems of nationality, super-national ethics and about problems of wars relevant to them. He made philosophical theoretical reflections with regard to this war after it ended, and presented, eventually, requirements for himself： to be satisfied with taking the possibility of the practical activities of philosophy as the topic of philosophical theoretical study and to give up, in drastic fashion, the intention in such philosophical practices as providing political proposals and exerting political influences, ＂living purely as a scientific philosopher.＂
文摘An exact analytic solution for wave diffraction by wedge or corner with arbitrary angle (rπ) and reflection coefficients (R0 and Rr) is presented in this paper. It is expressed in two forms-series and integral representations, corresponding recurrence relation and asymptotic expressions are also derived. The solution is simplified for some special cases of rπ. For Rr= R0,r= 1/N and Rr≠R0,r = 1/2N, the solution can be reduced to linear superpositions of incident and partially reflected waves, hence a nonlinear solution of forth order for this problem can be obtained by using the author's theory of nonlinear interaction among gravity surface waves. The given solution is related to inhomogeneous Robin boundary conditions, which include the Neumann boundary conditions usually accepted in wave diffraction theory.
